Mud valve



 

1. IN A VALVE FOR A MUD TANK, A FRAMEWORK HAVING PARALLEL SIDE MEMBERS, A VERTICALLY MOVABLE TUBULAR ELBOW CONDUIT MOUNTED IN SAID FRAMEWORK, A LOWER SEAT MOUNTED IN SAID FRAMEWORK ANS AN UPPER SEAT MOUNTED IN SAID CONDUIT, MEANS FOR MOVING SAID CONDUIT VERTICALLY WITH RELATION TO SAID FRAMEWORK TO MOVE SAID UPPER SEAT INTO AND OUT OF SEATING RELATION WITH SAID LOWER SEAT. 